Saw-tooth clothing for a textile machine

Abstract

The invention relates to a saw-tooth clothing for rollers of a carding machine or a carder. The saw-tooth clothing has a multiplicity of successively arranged teeth, wherein each tooth has a tooth front and a tooth back and a tooth tip. The tooth backs of the teeth have in each case a certain distance from the tooth front of the in each case following tooth and form a tooth space which extends from a tooth root to the tooth tips. Between the tooth tips and the tooth root, the teeth have in each case on their tooth back and on their tooth front at least one embossment which reduces the distance between the tooth back of the teeth and the tooth front of the in each case following tooth.

The invention claimed is: 
     
       1. A saw-tooth clothing for rollers of a carding machine or a carder, comprising:
 a plurality of successively arranged teeth, wherein each tooth has a tooth front, a tooth back, and a tooth tip; 
 a tooth space that extends from a tooth root to the tooth tips between successive teeth, the tooth space having a certain distance (A) from the tooth back to the tooth front of the following tooth; 
 at least one embossment defined on the tooth back and tooth front of the teeth between the toot tip and tooth root, the embossments having a shape such that the distance (A) between the tooth back and the tooth front of successive teeth is reduced as compared to a first section of the tooth back and tooth front before the embossment and as compared to a second section of the tooth back and tooth front after the embossment in a direction towards the tooth root. 
 
     
     
       2. The saw-tooth clothing as in  claim 1 , wherein the embossment on the tooth back is arranged opposite from the embossment on the tooth front of each tooth such that the embossments of successive teeth define a bottleneck restriction in the certain distance (A). 
     
     
       3. The saw-tooth clothing as in  claim 2 , wherein a distance (B) between the first sections of successive teeth is greater before the bottleneck restriction than a distance (C) after the bottleneck restriction in a direction towards the tooth root. 
     
     
       4. The saw-tooth clothing as in  claim 1 , wherein the embossment rises at an angle (α) of less than 15 degrees relative to the first section on the tooth front in a direction towards the tooth root. 
     
     
       5. The saw-tooth clothing as in  claim 4 , wherein the embossment on the tooth front reduces to the second section in a direction parallel to a tooth rib of the clothing. 
     
     
       6. The saw-tooth clothing as in  claim 1 , wherein the embossment rises at an angle (β) of less than 15 degrees relative to the first section on the tooth back in a direction towards the tooth root. 
     
     
       7. The saw-tooth clothing as in  claim 6 , wherein the embossment on the tooth back reduces to the second section in a direction perpendicular to a tooth rib of the clothing. 
     
     
       8. The saw-tooth clothing as in  claim 1 , wherein the first section of the tooth front before the embossment on the tooth front is angularly aligned with the second section of the tooth front after the embossment. 
     
     
       9. The saw-tooth clothing as in  claim 1 , wherein the first section of the tooth back before the embossment on the tooth back is angularly aligned with the second section of the tooth back after the embossment. 
     
     
       10. A doffer roller for a carding machine, the doffer roller comprising a saw-tooth clothing, wherein the saw-tooth clothing further comprises:
 a plurality of successively arranged teeth, wherein each tooth has a tooth front, a tooth back, and a tooth tip; 
 the tooth backs having a certain distance (A) from the tooth front of the following tooth and forming a tooth space that extends from a tooth root to the tooth tips; 
 at least one embossment defined on the tooth back and tooth front of the teeth between the toot tip and tooth root, the embossments having a shape such that the distance (A) between the tooth back and the tooth front of the following tooth is reduced as compared to a first section of the tooth back and tooth front before the embossment and as compared to a second section of the tooth back and tooth front after the embossment in a direction towards the tooth root. 
 
     
     
       11. The doffer roller as in  claim 10 , wherein the embossment on the tooth back is arranged opposite from the embossment on the tooth front of each tooth such that the embossments of successive teeth define a bottleneck restriction in the certain distance (A). 
     
     
       12. The doffer roller as in  claim 11 , wherein a distance (B) between the first sections of successive teeth is greater before the bottleneck restriction than a distance (C) after the bottleneck restriction in a direction towards the tooth root. 
     
     
       13. The doffer roller as in  claim 10 , wherein the embossment rises at an angle (α) of less than 15 degrees relative to the first section on the tooth front in a direction towards the tooth root. 
     
     
       14. The doffer roller as in  claim 13 , wherein the embossment on the tooth front reduces to the second section in a direction parallel to a tooth rib of the clothing. 
     
     
       15. The doffer roller as in  claim 10 , wherein the embossment rises at an angle (β) of less than 15 degrees relative to the first section on the tooth back in a direction towards the tooth root. 
     
     
       16. The doffer roller as in  claim 15 , wherein the embossment on the tooth back reduces to the second section in a direction perpendicular to a tooth rib of the clothing. 
     
     
       17. The doffer roller as in  claim 10 , wherein the first section of the tooth front before the embossment on the tooth front is angularly aligned with the second section of the tooth front after the embossment. 
     
     
       18. The doffer roller as in  claim 10 , wherein the first section of the tooth back before the embossment on the tooth back is angularly aligned with the second section of the tooth back after the embossment.